-- 3 --
3.1.1 Check if the refrigerant is leaking or not. Indicative value of pressure gauge is not less than 0.7MPa at high and
low balance when left for a long downtime.
（
This value varies with ambient temperature
，
Normal conditions (ambient
temperature > 15 degrees) should not be lower than 0.7MPa.If less than 0.7MPa, refrigerant may leak
）
Check all joints
of cooling system to see if there is any obvious oil stains or not. There would probably be a gas leakage if such oil stains
found. Please call professional maintenance support to repair and redo vacuuming and gas feeding.
3.1.2 Use megohmmeter to check all power cables and control wiring to be in position.
Make sure there is no short circuit, and the earthing is in good condition. Check all
wiring connections are tight.
Check again whether the N-wire is connected, if the N-wire
is connected incorrectly, it will cause the circuit board to burn out.
3.1.3 Switch on the master power supply. Check whether the Phase Sequence
Detection Indicator is on
，
If the
NORMAL
light is on, it will be normal. If the other lights
are on, it will be restored after the power is cut off and connected correctly. .
3.1.4 After the master power supply is switched on, turn the E-STOP button clockwise
and the red power lamp will be on. Oil heater of compressor automatically electrified,
Make sure that the oil heater is energized for more than 1 hour when it is first
started or when it is not working for a long time.
3.1.5 Check the setting value of high- and low-pressure controller. High pressure:2.8MPa, Low pressure:0.23MPa,
Return error:0.3MPa. Based on machine running test value
。
Notice
：
The set value is based on the display value of the
high- and low-pressure gauge when the machine is running. It has been set before leaving the factory. If there is
no trouble, please do not adjust it.
。
Ⅴ
. Operation
1.
Components
Evaporator
Ambient Temperature/
Humidity Probe
Thermostatic Expansion Valve
Bottom tank
Screen Display, Function
Button
Defrosting probe
Control Button
